(19)
(11) EP 2 944 381 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.01.2016 Bulletin 2016/03

(43) Date of publication A2:
18.11.2015 Bulletin 2015/47

(21) Application number: 15167387.8

(22) Date of filing: 12.05.2015
(51) International Patent Classification (IPC): 
B05D 3/00(2006.01)
B05D 1/16(2006.01)
 B05D 5/06(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA

(30) Priority: 12.05.2014 US 201461992093 P

(71) Applicant: Viavi Solutions Inc.
Milpitas, CA 95035 (US)

(72) Inventors:
  • Argoitia, Alberto
    Santa Rosa, CA 95405 (US)
  • Delst, Cornelis Jan
    Fairfax, CA 94930 (US)
  • Laden, Patrick
    Petaluma, CA 95954 (US)

(74) Representative: Jones, Keith William et al
Murgitroyd & Company Scotland House 165-169 Scotland Street
Glasgow G5 8PL
Glasgow G5 8PL (GB)

   


(54) OPTICALLY VARIABLE DEVICE COMPRISING MAGNETIC FLAKES


(57) An optically variable device may be manufactured by aligning magnetic flakes on a surface of an adhesive layer by applying the flakes onto the adhesive layer surface in presence of a magnetic field, and curing the adhesive layer having magnetic flakes adhered to the adhesive layer. When cured, the adhesive layer holds the magnetic flakes oriented, enabling subsequent encapsulation of the oriented magnetic flakes in a coating layer on the adhesive layer, without a substantial loss of orientation of the magnetic flakes.







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